You and Leon went on the mission to rescue Ashley, however, when you both met Luis, more than a couple of flirtations from the black haired and that you did not reject him, were enough to him to get jealous, and it was not until they separated from Luis who dared to claim you for it

"Why didn't you tell him to stop?" He asked, cornering you against the wall as soon as you two entered a safe cabin "Tell me, do you like him?" growled, you could hear the jealous tone in his voice